feat(cashier): complete transaction entry UI overhaul with Warm Stone theme and validations

Transaction Entry — Warm Stone theme:
- Card form with Classification/Account and Payment/Narration groups
- Newsreader serif captions + Hanken Grotesk body font (Google Fonts)
- DR/CR segmented toggle (red/green tint)
- Live footer: Total Debit/Credit/Difference + Balanced pill
- Post Entry enabled only when balanced; Save Draft button
- Add Row/Delete Row with numbered badges
- Amount with Rs prefix, cash auto-fill from denomination (green)
- Responsive group layout with vertical dividers

Withdrawal validations (onSave):
- Previous day unsettled + morning transfer hard blocks
- Account blocked/Dormant/Inactive/Escheat checks
- Sanctions/Willful Defaulter fixed (NO string != truthy)
- Denomination stock overdraft inline alert in closing position
- All browser alert() replaced with custom modal dialog
- Success modal (green) with reference number on post

Today Activity fixes:
- SD/FD/RD use content[], CA uses pageItems[]
- Charge Deduction sign fixed (minus/red)
- Fixed height 110px with scroll, Today Total removed
- A/C TYPE object resolved with label mapping

Non-Individual account:
- Personal Info shows Constitution/Incorp/Business for non-individual
- Partners/Members table replaces Nominees (clickable for details)
- Mode of Operation label fixed (enum -> readable string)
- Sanctions/Defaulter fixed for YES/NO string values

Current Account transactions:
- Fixed: query m_current_account_transaction table
- remarks column added to search query

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/index.html

@@ -28,6 +28,10 @@
     />
     <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Roboto+Mono:300" rel="stylesheet" />
     <link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@500&display=swap" rel="stylesheet" />
+    <link
+      href="https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600;700;800&family=Newsreader:ital,wght@0,400;0,500;1,400;1,500&display=swap"
+      rel="stylesheet"
+    />
     <!-- Load environment variables -->
   </head>
   <body class="h-full">